Facultad de Ciencias de la Tierra y Agua, Universidad Regional Amazónica Ikiam, km 7, via a Muyuna, Tena, Napo, Ecuador.
Facultad de Ciencias de la Vida, Universidad Regional Amazónica Ikiam, km 7, vía a Muyuna, Tena, Napo, Ecuador.
Bull Environ Contam Toxicol. 2021 Jul;107(1):45-51. doi: 10.1007/s00128-021-03138-2. Epub 2021 Feb 12.
We quantify plastic litter (PL, > 2 cm) and microplastics (MP, < 5 mm) from the sediments of a beach formed at a riverine depositional area, at the upper Amazon River basin, Ecuador. In the collection area (4400 m), the PL density was 0.045 items m, where low-density polyethylene bags were the prevalent PL. The beach was classified as "very clean" (Clean Coast Index (CCI) of 1.3 items m). Regarding MP, in 55 sampling stations, average MP concentrations ranged from 0 to 2200 items kg of dry sediment (0.5-2 mm), and 0-4200 items kg of dry sediment (2-5 mm). Blue fibers were the prevalent MP. Our results represent the first report to show the ubiquitous presence of PL and MP for the area. The monitoring and management of plastic disposal in freshwater beaches are necessary, as here we report a small part of an undocumented issue.
我们从厄瓜多尔亚马逊河流域上游的一个河川沉积区形成的海滩沉积物中定量了塑料垃圾（PL，>2 厘米）和微塑料（MP，<5 毫米）。在采集区域（4400 米），PL 密度为 0.045 个/米，其中低密度聚乙烯袋是主要的 PL。该海滩被归类为“非常干净”（清洁海岸指数（CCI）为 1.3 个/米）。关于 MP，在 55 个采样站中，平均 MP 浓度范围从 0 到 2200 个/千克干沉积物（0.5-2 毫米），和 0-4200 个/千克干沉积物（2-5 毫米）。蓝色纤维是主要的 MP。我们的研究结果首次表明，该地区普遍存在 PL 和 MP。有必要对淡水海滩的塑料处理进行监测和管理，因为在这里我们只报告了未记录问题的一小部分。
